EP 0233688 B1 19930407 - IMPROVED PHENATE PRODUCE AND PROCESS
Title (en)
IMPROVED PHENATE PRODUCE AND PROCESS
Publication
Application
Priority
US 81886286 A 19860114
Abstract (en)
[origin: US4664824A] There is provided a process for the preparation of an overbased sulfurized alkaline earth metal alkylphenate product which provides improved bright stock solubility and reduced foam stability, the overbased alkylphenate products produced thereby, and lubricating oil compositions containing such overbased alkylphenate products. According to the process, a mixture of an alkylphenol having an alkyl group containing from about 8 to about 40 carbon atoms, elemental sulfur, a dihydric alcohol containing from 2 to 6 carbon atoms, an alkaline earth metal compound, a lubricating oil, and a high boiling point linear monohydric alcohol having from about 18 to about 60 carbon atoms is heated to a first temperature within the range of about 121 DEG C. (250 DEG F.) to about 204 DEG C. (400 DEG F.); the resulting intermediate product mixture is contacted with carbon dioxide at a second temperature below 193 DEG C. (380 DEG F.) to provide a carbonated product mixture; the carbonated product mixture is treated to remove unreacted alkylphenol, unreacted dihydric alcohol, and substantially all of the remaining water of reaction to provide a final product mixture; and the final product mixture comprising said overbased alkylphenate and substantially all of the high boiling point linear monohydric alcohol is recovered.
IPC 1-7
IPC 8 full level
C10M 159/22 (2006.01); C10N 10/04 (2006.01); C10N 30/00 (2006.01); C10N 30/04 (2006.01); C10N 30/18 (2006.01); C10N 40/25 (2006.01); C10N 70/00 (2006.01)
CPC (source: EP US)
C10M 159/22 (2013.01 - EP US)
Citation (examination)
US 4518807 A 19850521 - HORI TAKASHI [JP], et al
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
US 4664824 A 19870512; AT E87971 T1 19930415; CA 1266684 A 19900313; CN 1021740 C 19930804; CN 1030996 C 19960214; CN 1075159 A 19930811; CN 87100661 A 19871223; DE 3785233 D1 19930513; EP 0233688 A1 19870826; EP 0233688 B1 19930407; JP H0460518 B2 19920928; JP S62190295 A 19870820
DOCDB simple family (application)
US 81886286 A 19860114; AT 87300243 T 19870112; CA 527186 A 19870113; CN 87100661 A 19870114; CN 92111264 A 19920928; DE 3785233 T 19870112; EP 87300243 A 19870112; JP 796387 A 19870114